Perhaps you should try some spelling variations:
thai tuc » thai thuc, thai thuy, thai hoc
dinh tri » chinh tri
cau treo » cau theo, cau tren, cau triet
dau tren » dau tien, dat tren, dau tieng
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va thai » van thai, va tai, va tham
va dinh » van dinh, va kinh, va tinh
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu va thai tuc va dinh tri ((cau treo) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu va thai tuc va dinh tri ((cau treo) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu va thai tuc va dinh tri ((cau treo) or (dau tren))*.